Yes they have tested the liquid, no it is not an infection. She has had a recent MRI and all is clear. This january the doctor went in, while removing the scar tissue and closed up the fistuala all the way to the bone. In no way has anyone said or been very concerned about it. They tried antibiotics just in case but that didn't do anything. They seem to feel they may need to open her all the way up again to figure it out. She does not want to do this, having already done it before. more later...annabel